CN106459542B - Thermoplastic resin composition and the moulding article obtained by application the composition - Google Patents
Thermoplastic resin composition and the moulding article obtained by application the composition Download PDFInfo
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- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/16—Homopolymers or copolymers of alkyl-substituted styrenes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/0005—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor characterised by the material
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- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
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- C08L33/20—Homopolymers or copolymers of acrylonitrile
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- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
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- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2021/00—Use of unspecified rubbers as moulding material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
- B29K2025/04—Polymers of styrene
- B29K2025/08—Copolymers of styrene, e.g. AS or SAN, i.e. acrylonitrile styrene
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- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
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- C08J2355/00—Characterised by the use of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08J2323/00 - C08J2353/00
- C08J2355/02—Acrylonitrile-Butadiene-Styrene [ABS] polymers
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- C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
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- C08J2455/00—Characterised by the use of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08J2423/00 - C08J2453/00
- C08J2455/02—Acrylonitrile-Butadiene-Styrene [ABS] polymers
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Abstract
The present invention relates to a kind of thermoplastic resin compositions with excellent chemical resistance, more specifically, it is related to a kind of resin combination for blow molding and the moulding article by molding the composition acquisition, the composition has vinyl cyanide compound (vinyl cyanide compound)-rubber-like polymer-aromatic ethenyl compound copolymer of the heat resistance of enhancing by control, the glass transition temperature (Tg) of α-methylstyrene (AMS) class heat stable resin and weight average molecular weight (Mw) keep the balance of mobility and impact resistance and improve chemical resistance especially in acrylonitrile-butadiene-styrene (ABS) (ABS) copolymer resin.According to the present invention it is possible to obtain the ABS resin composition for being used for blow molding while keeping mobility, the balance of impact resistance and heat resistance is remained at least identical horizontal with excellent chemical resistance and the moulding article obtained by application the composition.
Description
Technical field
The present invention claims the priority of the Korean Patent Application No. 10-2014-0169093 submitted on November 28th, 2014
Equity, be incorporated to the entire disclosure as part of this specification.
The present invention relates to a kind of styrene analog thermoplastic resin combinations with excellent chemical resistance, more specifically,
It is related to a kind of resin combination for blow molding and the moulding article by molding the composition acquisition, wherein will be resistance to
Hot resin is added into vinyl cyanide compound-rubber-like polymer-aromatic ethenyl compound graft copolymer resin
To enhance heat resistance, while mobility and anti-impact are kept by control glass transition temperature (Tg) and weight average molecular weight (Mw)
The balance of hitting property simultaneously improves chemical resistance.
Background technique
Styrene analog thermoplastic resin be by make the styrene homopolymerization as primary raw material or be copolymerized it with monomer with
The advantages of obtaining from the performance of each monomer and the resin that synthesizes.
As styrene resin, there are general purpose polystyrene (GPPS) resin by obtaining styrene homopolymerization and foaming
Polystyrene (EPS) resin, as high impact polystyrene (HIPS) resin of styrene and the copolymer of butadiene rubber and
SBR styrene butadiene rubbers (SBR) resin and the ABS by will be obtained on styrene and acrylonitrile grafting to butadiene rubber
Resin.
In addition, also by the ASA resin for obtaining the acrylic rubber copolymerization of styrene and acrylonitrile with based on,
Increased by the MBS class shock resistance for obtaining the polybutadiene copolymer of styrene and methyl methacrylate (MMA) with based on
Strong agent or Transparent ABS Resin, or by making the acrylic acid of methyl methacrylate (MMA) and acrylate monomer with based on
The acrylic impact of rubber copolymerized acquisition hits reinforcing agent.Styrene has the advantages of processability aspect, and butadiene has impact resistance
The advantages of aspect, and acrylonitrile has the advantages of rigidity and chemical resistance aspect.
Styrene analog thermoplastic resin combination is in various applications.The styrene resin of rubber reinforcement, especially
ABS resin due to its excellent mechanical performance and molding processability can wait and be widely used for Electrical and Electronic component, office is set
Standby, automobile component etc..
Injection ABS resin is usually by will be through Acrylonitrile Butadiene-Styrene copolymer (acrylonitrile-butadiene-benzene second that emulsion polymerization polymerize
Alkene, hereinafter referred to " emulsion polymerization ABS ") it with weight average molecular weight is 60,000 to 180,000 to polymerize through bulk polymerization
Styrene-acrylonitrile copolymer (styrene-acrylonitrile, hereinafter referred to as " bulk polymerization SAN ") mediates and squeezes out them
It is prepared into particle, is then used by injection particle with being processed into predetermined shape.
In general, being prepared as emulsion polymerization ABS with the rubber-like polymer in the range of 40 weight % to 60 weight %
Content.It, can be poly- by adjusting lotion depending on the application when in the casing products for being used for Electrical and Electronic product or toy
The proper proportion of ABS and bulk polymerization SAN is closed to prepare particle by extrusion operation, is then infused molten resin using injector
It is incident upon in mold to prepare product.
In the case where ABS resin is used to freeze sheet material, extremely at 95 DEG C by emulsion polymerization ABS and glass transition temperature
Within the scope of 110 DEG C, the bulk polymerization SAN of weight average molecular weight 80,000 to 200,000, or, if it is desired, weight average molecular weight
After the emulsion polymerization SAN for being 200,000 to 2,000,000 prepares particle by extrusion operation after mediating, pass through extrudate piece
Material shape manufactures them at moulding article through blow molding method.
Meanwhile the ABS resin for blow molding for manufacturing automobile spoiler needs low melt viscosity and high fever to scratch
Qu Wendu.Therefore, for emulsion polymerization ABS, the α-of emulsion polymerization of the weight average molecular weight in 150,000 to 250,000 range
Methylstyrene-acrylonitri (the heat-resisting SAN of AMS) can individually or and weight average molecular weight in 80,000 to 200,000 ranges
α-methylstyrene-acrylonitrile (the heat-resisting SAN of AMS) of bulk polymerization is used together to control melt viscosity.Needed for meeting
High heat deflection temperature, N-phenylmaleimide (PMI) analog copolymer (the heat-resisting SAN of PMI) is applied in combination.Particularly, pass through
Emulsion polymerization prepares α-methylstyrene-acrylonitrile copolymer that weight average molecular weight is 150,000 or more, because it is due to itself
High melt viscosity and be difficult to prepare by bulk polymerization.
Method for manufacturing automobile spoiler is to prepare mould by blow molding method after preparing parison by extrusion
Mould product.The heat-resisting SAN preparation of the bulk polymerization that can be only about 80,000 to 200,000 with existing weight average molecular weight is for blowing
Molding ABS resin is moulded for manufacturing automobile spoiler.In the case, the ABS for blow molding has very
Low melt viscosity, so that parison relaxation may occur during parison is formed, and when parison, the wall of moulding article
Thickness ununiformity is even to become serious.Further, since after shaping, chemical resistance deteriorates when painting to flow-disturbing slab products, installing extremely
During use after on automobile, in the cracked phenomenon in the thin part of moulding article, so as to cause spoiler crack defect.
Summary of the invention
Technical problem
The present invention is intended to provide a kind of heat-resisting ABS resin for blow molding, the resin is for manufacturing automobile spoiler
And impact strength (1/4 "), 100 DEG C or more of heat deflection temperature (1/4 "), 0.5g/ with 15kgcm/cm or more
The flow rate (flowability) of 10min to 3.0g/10min and application for paint diluent after 40% with
On elongation retention.
Specifically, blow molding be certain shapes after, in order to enhancing surface and enhancing resistance to marring and weatherability, automobile disturb
Process of the flowing plate by polishing and painted surface.At this point, the internal residual stress of ABS resin may not completely eliminated, therefore
The surface of ABS resin is comprised in the diluent corrosion in paint in spray painting, so that physical property be made to significantly reduce.It is corroded
Surface can become crackle or crack over time, in turn result in defect.
Even if the ABS resin for being used for blow molding is designed to there is high initial physical performance, but when resin itself
Environmental stress crack resistance (ESCR) reduce when, as internal residual stress concentrate on spray painting when caused by, over time can
Become the defect for causing product to damage on the micro-crack in crack.Become the physics of micro-crack or microcrack when spray painting most sensitively
Performance is elongation.As the value of the elongation after spray painting is lower compared with the initial value of elongation, occur being corroded by paint
Caused by crack a possibility that it is higher.
In order to enhance environmental stress crack resistance (ESCR), the resin for blow molding is usually using with high molecular weight
Heat-resisting SAN resin raw material.However, ESCR is mentioned when only using the heat-resisting SAN resin that weight average molecular weight is 220,000 or more
Height, but mobility excessive descent, to make yield reduce, the rate of release of internal residual stress is slack-off, and due to production process
In high molecular weight caused by excessive frictional force, increase the temperature of molten resin excessively, cause the degradation of resin.In addition,
The problem of there is also the reductions of impact strength caused by the constraint due to polymer chain.
In addition, when only using the heat-resisting SAN resin that weight average molecular weight is 150,000, the ABS resin for blow molding
Make that parison relaxation occurs during preparing parison with low-down melt viscosity.In addition, when parison, molding
The in uneven thickness of product can become serious, moreover, because the deterioration of chemical resistance, in the process painted to molding spoiler
A possibility that middle generation rift defect, will increase.
Other than the method above-mentioned for increasing molecular weight, usually using the content for for example increasing rubber-like polymer
Or increase the method for the partial size of rubber-like polymer, but still there are problems that heat resistance.
Technical solution
Present invention seek to address that the above problem, and a kind of resin combination is provided, which includes lotion
Polymerize ABS and 30 weight % or more has 125 DEG C or more of glass transition temperature and 150,000 to 250,000 weight
The heat-resisting SAN resin of α-methylstyrene (AMS) class emulsion polymerization of average molecular weight is to improve the thermoplastic resin for blow molding
The heat resistance and chemical resistance of oil/fat composition.
At this point, the resin combination is also in order to need to adjust melt viscosity characteristics in level appropriate according to client
The 30 weight % glass transition temperature and 80,000 below having less than 125 DEG C be may include more than and less than 150,000
Weight average molecular weight the heat-resisting SAN resin of α-methylstyrene class bulk polymerization and 0 weight % to 10 weight % N- phenyl horse
Carry out acid imide (PMI) quasi polymer to meet heat resistance.
In addition, in order to impact resistance is maintained to same or higher level on, by the thermoplastic for being used for blow molding
The content of rubber-like polymer in property resin combination is adjusted in the range of 30 weight % to 75 weight %.
Beneficial effect
The present invention provides a kind of mobility with excellent chemical resistance and balance, impact resistance and identical or more
The moulding article for the thermoplastic resin and application of the blow molding resin of high-caliber heat resistance.
Specific embodiment
The present invention will be described in more detail by following example.It is apparent to those skilled in the art
Be that these embodiments are intended merely to that the present invention is more specifically described, and the scope of the present invention of theme according to the present invention is not
It is limited to these embodiments.
The present invention relates to a kind of thermoplastic resin compositions with excellent chemical resistance, more particularly, to one kind
Resin combination for blow molding and the moulding article by molding resin combination acquisition, wherein by heat-resisting tree
Rouge is added into vinyl cyanide compound-rubber-like polymer-aromatic ethenyl compound graft copolymer resin to increase
Strong heat resistance, while mobility and impact resistance are kept by control glass transition temperature (Tg) and weight average molecular weight (Mw)
Balance and improve chemical resistance.
Hereinafter, it will be explained in thermoplastic resin composition of the invention.
1. graft copolymer resin
1-1. structure
Graft copolymer resin in the present invention is to graft to aromatic ethenyl compound and vinyl cyanide compound
Copolymer on rubber-like polymer.
The structure of the rubbery copolymer is unrestricted, but can be used selected from polydiene, such as polybutadiene,
Styrene-butadiene and polyacrylonitrile-butadiene；Hydrogen is added to the saturated rubber into polydiene；Acrylic rubber,
Such as C1 is to C8 alkyl acrylate, butyl polyacrylate and ethylhexyl acrylate；Isoprene rubber；Chlorobutadiene rubber
Glue；Ethylene-propylene (EPM) rubber；And at least one of Ethylene-Propylene-Diene monomer (EPDM) rubber, and preferably
Polybutadiene rubber in polydiene.
There is no limit for the content of rubber-like polymer in the present invention, but the total weight based on graft copolymer resin,
It can be 30 weight % to 75 weight %, preferably 40 weight % to 60 weight %.When using above-mentioned rubber-like polymer, no
Only graft copolymer has high grafting rate, and the moulding article finally prepared has excellent impact strength and chemical resistance.
Being grafted to the structure of the aromatic ethenyl compound on rubber-like polymer, there is no limit but can be used and be selected from
Styrene, α-methylstyrene, Beta-methyl styrene, p-methylstyrene, ethyl styrene, hydroxy styrenes, vinyl two
At least one of toluene, monochlorostyrene, dichlorostyrene, Dowspray 9 and vinyl naphthalene, and preferably styrene.
There is no limit for the content of aromatic ethenyl compound in the present invention, but based on the total of graft copolymer resin
Weight is suitably 30 weight % to 94 weight %, and can effectively improve to rubber-like polymer within the above range
Grafting rate.
Being grafted to the structure of the vinyl cyanide compound on rubber-like polymer, there is no limit but can be used selected from saturation
In nitrile such as acrylonitrile and unsaturated nitrile such as methacrylonitrile and ethyl acrylonitrile (ethacrylonitrile) at least
One kind, and preferably acrylonitrile.
There is no limit for the content of vinyl cyanide compound in the present invention, but the gross weight based on graft copolymer resin
Amount, is suitably 10 weight % to 40 weight %, and can effectively improve to rubber-like polymer within the above range
Grafting rate.
Most preferably, it can be used the acrylonitrile-on acrylonitrile and styrene-grafted to butadiene rubber shaped polymer
Butadiene-styrene (hereinafter referred to as " ABS ") resin, the resin show physical property such as impact resistance and heat resistance
Significantly.The ABS resin used in one embodiment of the invention is as shown in following formula 1 by styrene-acrylonitrile
(SAN) one kind being grafted on butadiene rubber.
[formula 1]
In the present specification, described " ABS resin " is not necessarily just finger acrylonitrile-butadiene-styrene copolymer
(ABS) resin, and in some cases, it is apparent that it can be broadly construed as including by vinyl cyanide chemical combination
Object-rubber-like polymer-aromatic ethenyl compound copolymer composition resin.
The factor of 1-2. influence physical property
(i) content of rubber-like polymer
Total weight based on graft copolymer resin, while meeting the stream for being adapted for use in the thermoplastic resin of blow molding
The content of the rubber-like polymer of the impact resistance of the chemical resistance and final product of painting process is 30 after dynamic property, molding
Weight % to 75 weight %, preferably 40 weight % are to 60 weight %.In the above range, the mobility of resin does not reduce,
Enhance that shock proof effect is equally excellent, and the graft copolymer moulding article finally prepared shows excellent impact strength
And chemical resistance.
(ii) partial size of rubber-like polymer
The thermoplasticity with excellent impact resistance and processability must be obtained using large-sized rubber-like polymer
Resin, however the thermoplastic resin with excellent surface gloss must be obtained using the rubber-like polymer of small particle.
As the thermoplastic resin for blow molding in order to excellent impact resistance, processability and lustrous surface
It spends, resin used in the present invention can have the equal average grain diameter of Z of the rubber-like polymer in 0.1 μm to 1.5 μ ms.
(iii) gel content of rubber-like polymer
Although the gel content of rubber-like polymer is not particularly limited, when gel content is lower, rubber-like is poly-
It closes the monomer inside object to be more swollen to polymerize, and therefore apparent partial size increases, to improve impact strength.However,
Gel content is higher, and apparent partial size reduces, to show excellent surface gloss.
Gel content is not set in the present invention and is limited, in the case where obtaining component by emulsion polymerization, gel
Content is preferably 30 weight % to 98 weight %, and can be obtained within the above range more particularly to provide with excellent resistance to
Chemically with the thermoplastic resin of the moulding article of impact resistance.
In addition, the gel content can be calculated according to following method.
Firstly, the rubber-like polymer of 1g is introduced to juxtaposition 48 hours at room temperature in the toluene of 100ml, then pass through
(weight is known as W to the metal mesh filter of 100 mesh1).The undissolved substance of the toluene and metal mesh are done in the vacuum at 80 DEG C
Dry 6 hours, (weight was known as W for weighing2).Gel content is calculated according to following equation 1.
Equation 1) gel content (weight %)=[{ W2(g)-W1(g)}/1(g)]×100
(iv) grafting rate
When preparing the graft ABS resin, grafting rate greatly influences physical property.Therefore, in the present invention preferably
The ABS resin for the use of grafting rate being 25% to 55%.If the grafting rate is less than 25%, due to a large amount of non-grafted and expose to the open air
Latex presence, rubber particles mutually collide and are formed the rubber of aggregation, so that weatherability and transparency be made to reduce.And if
The grafting rate is greater than 55%, and thermal stability reduces and collision efficiency will not further increase.
To grafting rate, there is no limit in the present invention.The usual grafting rate can be by the monomer weight that will be grafted (referred to as
W3) and reach core copolymer weight (referred to as W4) be applied in following equation 2 to export.
Equation 2) grafting rate (%)={ W3(g)/W4(g)}x 100
1-3. preparation method
As the method for being used to prepare graft ABS resin, it is known that emulsion polymerization, suspension polymerisation, polymerisation in solution, ontology are poly-
It closes, use the method for suspension polymerisation and bulk polymerization simultaneously and use emulsion polymerization and the method for bulk polymerization etc. simultaneously.?
In these methods, emulsion polymerization and bulk polymerization are used usually in production base.
There is excellent mechanical performance and glossiness by ABS resin prepared by emulsion polymerization, but due to emulsion polymerization mistake
The property of journey and the emulsifier and flocculant that must be used do not remove from solidification and dehydration completely and remain in most
The deterioration of physical property is caused in whole product.And it is difficult to handle the contaminated water as polymerisation medium.In addition, emulsion polymerization
Individually solidification and dehydration are needed after polymerisation, therefore it is uneconomic compared with the bulk polymerization of continuous operation.
Meanwhile by bulk polymerization prepare ABS resin have excellent formability, the dimensional stability of moulding article and
Impact resistance, therefore it is used for various fields such as household electrical appliance, office equipment and automobile component recently.It is used for shape
In the complicated and thin moulding article of thickness, it is therefore desirable to higher impact resistance, glossiness and mobility.In general, passing through this
In the case that body polymerization prepares ABS resin, rubber-like polymer has the grain bigger than the ABS resin prepared by emulsion polymerization
Diameter.Therefore, the impact resistance of the ABS resin prepared by bulk polymerization is high, but glossiness is relatively poor.
It is poly- that the method for being used to prepare graft ABS resin of the invention is not particularly limited to emulsion polymerization, bulk polymerization, solution
Conjunction and suspension polymerisation.In one embodiment, the resin can be by making butadiene type rubber, acrylonitrile monomer
With styrene monomer by emulsion grafting polymerization, the powdered resin of solidification, dehydration and dry preparation.The resin can be
By continuous or disposably by the acrylonitrile monomer comprising 10 parts by weight to 40 parts by weight and 30 parts by weight to 94 parts by weight
It is 0.1 μm to 1.5 μm that the monomer mixture of styrene monomer, which is introduced to the average grain diameter comprising 40 parts by weight to 60 parts by weight,
Butadiene type rubber, the emulsifiers of 0.6 parts by weight to 2 parts by weight, 0.2 parts by weight to 1 parts by weight molecular weight modifying agent with
And 0.05 parts by weight into the polymerization initiator of 0.5 parts by weight, make its by emulsion grafting polymerization, with 5% aqueous sulfuric acid
Make the powdered resin that then gains solidification is dehydrated and prepared by drying.
2. heat-resistant copolymer
2-1. type
Conventional method for giving ABS resin heat resistance include be added in the polymerization process of ABS have it is excellent resistance to
The method of hot α-methylstyrene class or maleimide monomer and mixing include above-mentioned with excellent heat resistance
Monomer heat-resistant copolymer and ABS resin method.The copolymer with excellent heat resistance is usually by making α-first
Base phenylethylene or maleimide monomer and vinyl cyanide compound such as acrylonitrile and/or aromatic ethenyl compound
Monomer is for example styrene copolymerized or prepared by ternary polymerization.
Additionally, it has been proposed that by mediating heat-resistant copolymer to the side for preparing heat-resisting ABS resin on graft ABS resin
Method.As the method for preparing the heat-resisting ABS resin, it is known that by being replaced with the α-methylstyrene with excellent heat resistance
The styrene that uses prepares the method (US of heat-resisting ABS resin when heat-resistant copolymer partly or entirely in preparation for kneading
The patent No. 3,010,936 and the method for 4,659,790), by including maleimide compound preparing heat-resisting ABS resin
(JP laid-open patent publication No. SO58-206657, SO63-162708 and SO63-235350 and US patent publication No. 4,757,
109) method etc. of the method and filling inorganic material, mediated with polycarbonate resin.
Heat-resistant copolymer in the present invention is by having aromatic ethenyl compound within the scope of certain temperature
There is the polymer monomer copolymerization of heat resistance come the copolymer for preparing or by being in addition copolymerized to vinyl cyanide compound thereon
The copolymer of preparation.
For example, the heat-resistant polymer monomer can be selected from α-methylstyrene, N-phenylmaleimide, N- phenyl
At least one of maleic acid and maleic anhydride of styrene.Heretofore described heat stable resin includes generally including Alpha-Methyl benzene
The copolymer of ethylene and the copolymer for additionally comprising N-phenylmaleimide.
(i) α-methylstyrene (hereinafter referred to as " AMS ") quasi polymer
As heat-resistant copolymer of the invention, as shown in following formula 2, AMS quasi polymer is AMS and acrylonitrile (AN) is total to
Polymers.
[formula 2]
As the AMS quasi polymer, AMS monomer using predetermined ratio by making 50 parts by weight to 80 parts by weight with
The polymer of acrylonitrile (AN) the copolymerization preparation of 20 parts by weight to 50 parts by weight.
If the content of the AMS monomer less than 50 parts by weight, has, heat resistance is reduced and color becomes when heated
The problem of yellow.If it is greater than 80 parts by weight, since the AMS sequence for being quickly generated three or more in segment combines
The structure of ([AMS]-[AMS]-[AMS]: thermal decomposition structure), has the problem of obtained heat stable resin is easy degradation.
In addition, if the content of acrylonitrile (AN) less than 20 parts by weight, has a conversion ratio and the problem of molecular weight reduces.Such as
Fruit its be greater than 50 parts by weight have due to a large amount of acrylonitrile (AN) in resin and generate insoluble gel polymerisation in a solvent
The problem of object.Due to the thermal stability of the gelatin polymer is very low and also the gelatin polymer can be used as when heated it is red
Color or black foreign matter, therefore damage the appearance of product.
Total weight based on resin combination, AMS quasi polymer of the invention can be 30 weight % to 75 weight %, excellent
50 weight % are selected as to 75 weight %.If above-mentioned AMS quasi polymer is less than above range, enough heat resistances cannot be obtained.
On the contrary, opposite due to grafted ABS lacks if it is greater than above range, then there is not only mobility reduction, but also impact strong
The problem of degree and surface gloss reduce.
As the AMS quasi polymer in the present invention, the tool in the range of 30 weight % to 75 weight % can be used alone
There is the AMS quasi polymer or in addition of 125 DEG C or more of glass transition temperature and 150,000 to 250,000 weight average molecular weight
And with the glass transition temperature having less than 125 DEG C in the range of 30 weight % or less and more than or equal to 8,000 be less than
The AMS quasi polymer of 150,000 weight average molecular weight is used together.
(ii) N-phenylmaleimide (hereinafter referred to as " PMI ") quasi polymer
PMI quasi polymer as heat stable resin of the invention can be N- (substitution) maleimide, vinyl monomer
With the copolymer of unsaturated dicarboxylic.In general, PMI quasi polymer N-phenylmaleimide-benzene as shown in following formula 3
The terpolymer (PMI- phenylethylene-maleic anhydride) of ethylene-maleic acid indicates.
[formula 3]
The terpolymer of above-mentioned formula 3 is preferably by the phenyl maleimide (PMI) of 45 weight % to 55 weight %, 40
The maleic anhydride of the styrene and 1 weight % of weight % to 50 weight % to 10 weight % form, and more preferably by 50 weights
The maleic anhydride composition of the PMI of %, the styrene of 45 weight % and 5 weight % are measured, but is not limited to this in the present invention.
PMI quasi polymer of the invention can selectively be applied to above-mentioned in the range of 0 weight % to 10 weight %
In AMS quasi polymer, and preferably with 180 DEG C to 220 DEG C of glass transition temperature and 80,000g/mol to 200,
The weight average molecular weight of 000g/mol.Within the above range, have and show excellent heat resistance and impact resistance and good squeeze
Property and the advantages of mobility out.
The factor of 2-2. influence physical property
(i) glass transition temperature
If the glass transition temperature of the heat stable resin is equal to or higher than 125 DEG C as normal temperature, resin
Excellent heat resistance, but mobility reduces.Therefore, because heat stable resin is included in the thermoplastic resin for blow molding, have
The advantages of excellent heat resistance, however since mobility reduces, then there is the shortcomings that yield reduction.
To solve the above-mentioned problems, there is the glass transition temperature less than normal temperature than mixing with scheduled content
Heat resistance is maintained in excellent level by heat stable resin while by improving mobility to supply yield.
(ii) weight average molecular weight
Heat stable resin of the invention has 80,000 to 250,000 weight average molecular weight.When it is less than 80,000, have
The problem of chemical resistance and heat resistance reduce.When it is greater than 250,000, chemical resistance is improved, but mobility reduces so that not
Easy processing, and therefore reduce yield.
In order to use weight average molecular weight be 150,000 to 250,000 in the range of heat stable resin, can prepare relatively high
The resin of molecular weight, and chemical resistance and impact resistance therefore can be improved.That is, being used when the heat stable resin is included in
When in the thermoplastic resin of blow molding, the crackle as caused by the diluent in subsequent painting process can be effectively prevented
Or crack.
Meanwhile the tree of the relatively low molecular weight when preparation weight average molecular weight in the range of 80,000 to less than 150,000
Rouge and with predetermined content mix to make up the mobility as caused by relatively high molecular weight the problem of when, by improve mobility
Chemical resistance and impact resistance be maintained at while supplying yield in excellent level.
2-3. preparation method
Although what is be generally noted above is used to prepare in the method for ABS resin, the various methods may be used to prepare institute
Heat stable resin is stated, but usually using the emulsion polymerization and bulk polymerization in these methods in production base.
The US patent No. 3,010,936,3,367,995 and 4,774,287 is disclosed through emulsion polymerization preparation with excellent
Heat resistance copolymer resin method.Particularly, the AMS resinoid is usually prepared simultaneously by emulsion polymerization, kneading
It uses.In view of economic benefit and impact resistance, this method is excellent, but due to the property of AMS emulsion polymerization, there is reaction temperature
The problem of low and required reaction time length is spent, and thermal stability is low so that bulk gas generates and reduces glossiness.
Therefore, the US patent No. 5,414, the 045 and US patent No. 5,569,709, which is disclosed, prepares AMS tree by bulk polymerization
The problem of method of rouge is to improve emulsion polymerization.The advantages of these methods, is that they can be obtained with the high-purity of high polymerization degree
Spend polymer.But they the shortcomings that be to increase with the carry out viscosity or rate of polymerization of reaction and molecular weight distribution it is wide,
Polymer changes colour due to side reaction
Therefore, when by preparing heat stable resin with bulk polymerization with the polymerization of predetermined ratio mixed emulsion, it is contemplated that tool
Make up respective disadvantage.Therefore, in the present invention, the AMS resin prepared by emulsion polymerization is substantially used, simultaneously
In addition the AMS resin prepared by bulk polymerization is used.
It hereinafter, will the present invention will be described in detail by embodiment.
1. the preparation of thermoplastic resin composition
A.ABS base resin
Use ABS (SR172, the manufacturer: LG of the rubber-like polymer content with 60% prepared by emulsion polymerization
CHEM, Ltd.) as aromatic ethenyl compound and vinyl cyanide compound grafted to conjugated diene rubber shaped polymer
On copolymer.
B.AMS class heat stable resin
B-1. it uses and is again divided equally by prepared by emulsion polymerization with 130 DEG C of glass transition temperature and 170,000
The AMS class heat stable resin (PW635, manufacturer: LG CHEM, LTD.) of son amount.
B-2. it uses and is again divided equally by prepared by bulk polymerization with 120 DEG C of glass transition temperature and 100,000
The AMS heat stable resin (98UHM, manufacturer: LG CHEM, LTD.) of son amount.
C.PMI class heat stable resin
Use the PMI heat stable resin (MS- with 201 DEG C of glass transition temperature and 150,000 weight average molecular weight
NB, manufacturer: Denka).
2. the preparation of composition
Than preparing there is different glassization to turn by the content and the ingredient according to shown in the following table 1 of fixed ABS resin (A)
The AMS class heat stable resin (B-1, B-2) and PMI class heat stable resin (C) of temperature and weight average molecular weight are to prepare following implementation
Example 1 to 3 and comparative example 1 and 2.In table 1, A, B-1, B-2 and C are the thermoplastic resin of above-mentioned preparation.
[table 1]
Embodiment 1
Use copolymer produced above, resin etc..By by (A) ABS base resin (SR172, manufacturer: LG
CHEM, LTD.) 38 weight % are fixed as, and only change the part in these contents, i.e. (B-1) AMS class heat stable resin
(PW635, manufacturer: LG CHEM, LTD.) is 62 weight % to prepare composition.
Embodiment 2
Use copolymer, the resin etc. of such as above-mentioned preparation.By by (A) ABS base resin (SR172, manufacturer: LG
CHEM, LTD.) 38 weight % are fixed as, and only change the part in these contents, i.e. (B-1) AMS class heat stable resin
(PW635, manufacturer: LG CHEM, LTD.) is 51 weight %, (B-2) AMS class heat stable resin (98UHM, manufacturer: LG
CHEM, LTD.) it is 10 weight % and (C) PMI class heat stable resin (MS-NB, manufacturer: Denka) is 1 weight % to prepare group
Close object.
Embodiment 3
Use copolymer, the resin etc. of such as above-mentioned preparation.By by (A) ABS base resin (SR172, manufacturer: LG
CHEM, LTD.) 38 weight % are fixed as, and only change the part in these contents, i.e. (B-1) AMS class heat stable resin
(PW635, manufacturer: LG CHEM, LTD.) is 40 weight %, (B-2) AMS class heat stable resin (98UHM, manufacturer: LG
CHEM, LTD.) it is that 20 weight % and (C) PMI class heat stable resin (MS-NB, manufacturer: Denka) prepare group to 2 weight %
Close object.
Comparative example 1
Use copolymer, the resin etc. of such as above-mentioned preparation.By by (A) ABS base resin (SR172, manufacturer: LG
CHEM, LTD.) 38 weight % are fixed as, and only change the part in these contents, i.e. (B-1) AMS class heat stable resin
(PW635, manufacturer: LG CHEM, LTD.) is 28 weight %, (B-2) AMS class heat stable resin (98UHM, manufacturer: LG
CHEM, LTD.) it is 31 weight %, and (C) PMI class heat stable resin (MS-NB, manufacturer: Denka) is 3 weight % to prepare group
Close object.
Comparative example 2
Use copolymer, the resin etc. of such as above-mentioned preparation.By by (A) ABS base resin (SR172, manufacturer: LG
CHEM, LTD.) be fixed as 38 weight %, and only change the part in these contents, i.e., (B-2) AMS class heat stable resin (PW635,
Manufacturer: LG CHEM, LTD.) it is 62 weight % to prepare composition.
3. the measurement of physical property
240 double screw extruder by mediate above-described embodiment 1 to 3 and comparative example 1 and 2 composition, so
Sample of the injection preparation for measurement afterwards, the following table 2 show measurement flow index (g/10min), impact strength (kgcm/
Cm), the result of the physical property of heat deflection temperature (HDT, DEG C) and elongation retention (%).
[table 2]
The evaluation condition of physical property in the present invention is as follows.
(1) every 10 minutes extrusion outputs (g) flow index: are measured under 220 DEG C, the load of 10kg according to ASTM D1238
It calculates.
(2) IZOD impact strength test machine (manufacturer: TINIUS OLSEN) impact strength: is used according to ASTM D256
It is being formed with indentation and " is being measured on the sample of (6.35mm) with a thickness of 1/4.
(3) heat deflection temperature (HDT): according to ASTM D648-07 in 18.6kgf/cm2Load and 120/hr heating
Measurement is under rate with a thickness of 1/4 " (6.35mm) sample.
(4) elongation retention: being answered on variable curvature fixture according to ASTM D638-10 by the way that sample is fixed on 1.7%,
Sample is then removed from fixture after 10 minutes using NOROOBEE T-803 diluent thereon and measures elongation, by should
Elongation is applied in following equation 3 and calculates.
Equation 3) elongation retention (%)=(using the elongation after diluent/apply the elongation before diluent)
×100
Table 1 above and table 2 are shown with the ABS base resin relative to (A) 38 weight %, 62% heat stable resin it is pre-
Determine the knot of the composition comprising (B-1), (B-2) AMS class heat stable resin and/or (C) PMI class heat stable resin of ratio of components preparation
Fruit.The present invention relates to for blow molding thermoplastic resin composition and moulding article, and resin combination should have with
Lower requirement is with characteristic appropriate.
Firstly, flow index should be in the range of 0.5g/10min to 3.0g/10min.When flow index is less than 0.5g/
When 10min, can generate the difficulty in such as moulding process and the resin as caused by excessive frictional heat degradation it is physical
The problem of capable of deteriorating.If mobility is greater than 3.0g/10min, it may appear that pitch tube (parison) relaxation is asked in blow-moulding process
Topic, therefore above range is most preferred.
Second, chemical resistance should be excellent in painting process.If the chemical resistance of resin is poor, can spray painting when due to
There is micro-crack in paint corrosion, and the residual stress inside resin causes crack to generate.In the present invention, by diluent application
10 minutes elongation retentions should be 40% or more after on resin.
Third, heat resistance and impact resistance should be maintained in same or higher level.Heat deflection temperature (HDT) preferably exists
In the range of 100 DEG C to 120 DEG C and impact strength is preferably in the range of 20kgcm/cm to 35kgcm/cm.
Table 1 above and table 2 the result shows that, as the content of AMS class heat stable resin B-1 is reduced and AMS class heat stable resin
The content of B-2 increases, and flow index increases and heat deflection temperature reduces.As can be seen that relatively high glass transition temperature and
Relatively large weight average molecular weight is the factor for improving heat resistance but reducing mobility.That is, it is contemplated that have by being added
There is the AMS class heat stable resin of relatively low glass transition temperature and relatively small weight average molecular weight can be by reduced mobility
Increase to level appropriate.
Based on above example and comparative example as a result, the present invention provides a kind of resin groups for blow molding
Object is closed, which includes that the rubber-like polymer content of 25 weight % to 50 weight % is 40 weight % to 60 weight %
ABS resin, 30 weight % to 75 weight % with 125 DEG C or more glass transition temperatures and 150,000 to 250,000
The AMS class heat stable resin of weight average molecular weight, 0 weight % to 30 weight % the glass transition temperature having less than 125 DEG C and
The AMS class heat stable resin of weight average molecular weight more than or equal to 80,000 and less than 150,000 and 0 weight % are to 10 weight %'s
PMI class heat stable resin.At this point, above-mentioned AMS class heat stable resin can be a kind of tree by emulsion polymerization or bulk polymerization preparation
Rouge.
Claims (10)
1. a kind of moulding article molded using thermoplastic resin composition by blow moulding process, the thermoplastic resin group
Closing object includes:
The vinyl cyanide compound of 25 weight % to 50 weight %-rubber-like polymer-aromatic ethenyl compound grafting
Copolymer resin；And
30 weight % to 75 weight % with 125 DEG C or more of glass transition temperature (Tg) and 150,000 to 250,000
The α-methylstyrene class heat stable resin of weight average molecular weight (Mw),
Elongation retention (%) is assumed according to ASTM D638-10:[=(using the elongation after diluent/apply diluent
Elongation × 100 before)], the moulding article has 40% or more elongation retention.
2. moulding article according to claim 1, which is characterized in that the graft copolymer resin is acrylonitrile and benzene second
Alkene is grafted to the ABS resin on butadiene rubber shaped polymer.
3. moulding article according to claim 1, which is characterized in that the graft copolymer resin has 40 weight % extremely
The content of the rubber-like polymer of 60 weight %.
4. moulding article according to claim 1, which is characterized in that the heat stable resin is prepared by emulsion polymerization.
5. moulding article according to claim 1, which is characterized in that the thermoplastic resin composition also includes 0 weight
Measure the glass transition temperature of % to 30 weight % having less than 125 DEG C and more than or equal to 80,000 and less than 150,000
The α-methylstyrene class heat stable resin of weight average molecular weight.
6. moulding article according to claim 5, which is characterized in that the α-methylstyrene resinoid is poly- by ontology
Close preparation.
7. moulding article according to claim 1, which is characterized in that the thermoplastic resin composition also includes 0 weight
Measure the N-phenyl maleimide heatproof resin of % to 10 weight %.
8. moulding article according to claim 1, which is characterized in that assume according to ASTM D1238:[in 220 DEG C, 10kg
Load under measure every 10 minutes extrusion outputs (g)], the moulding article have 0.5g/10min to 3.0g/10min flowing
Index.
9. moulding article according to claim 1, which is characterized in that assume that application is formed with quarter according to ASTM D256:[
Trace and with a thickness of 1/4 " sample of (6.35mm)], the moulding article have 20kgcm/cm to 35kgcm/cm impact
Intensity.
10. moulding article according to claim 1, which is characterized in that assume according to ASTM D648-07:[
18.6kgf/cm2Load and 120/hr heating rate under applied thickness be 1/4 " sample of (6.35mm)], the molding is made
Product have 100 DEG C to 120 DEG C of heat deflection temperature.
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| KR1020140169093A KR101811485B1 (en) | 2014-11-28 | 2014-11-28 | Thermoplastic Resin Composition and Molded Article Thereof |
| PCT/KR2015/012611 WO2016085222A1 (en) | 2014-11-28 | 2015-11-24 | Thermoplastic resin composition and molded product obtained by applhying same |
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| EP (1) | EP3127962B1 (en) |
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| KR102201309B1 (en) * | 2017-11-24 | 2021-01-11 | 주식회사 엘지화학 | Resin composition |
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| KR102232505B1 (en) | 2017-12-29 | 2021-03-26 | 롯데첨단소재(주) | Thermoplastic resin composition and molded product using the same |
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2014
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000038427A (en) * | 1998-05-20 | 2000-02-08 | Kanegafuchi Chem Ind Co Ltd | Heat-resistant medicinal and medical material and container and sealable article comprising the same |
| CN1455786A (en) * | 2001-01-08 | 2003-11-12 | Lg化学株式会社 | Method for preparing thermoplastic resin |
| CN101711261A (en) * | 2007-06-15 | 2010-05-19 | 韩国锦湖石油化学株式会社 | Have low melting viscosity based on the terpolymer of maleimide-alpha-alkyl phenylethylene and the continuous bulk process that is used to produce it |
| CN101121766A (en) * | 2007-07-24 | 2008-02-13 | 浙江大学 | Method for synthesizing heat resisting type vinyl aromatic monomer polymer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106459542A (en) | 2017-02-22 |
| US10106677B2 (en) | 2018-10-23 |
| US20170260382A1 (en) | 2017-09-14 |
| WO2016085222A1 (en) | 2016-06-02 |
| EP3127962B1 (en) | 2019-07-10 |
| EP3127962A1 (en) | 2017-02-08 |
| JP6503374B2 (en) | 2019-04-17 |
| WO2016085222A8 (en) | 2016-09-29 |
| KR20160064864A (en) | 2016-06-08 |
| EP3127962A4 (en) | 2017-10-18 |
| JP2017536423A (en) | 2017-12-07 |
| KR101811485B1 (en) | 2017-12-21 |
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